For data association in multisensor and multitarget tracking, a novel parallel algorithm is developed to improve the efficiency and real-time performance of FGAs-based algorithm. One Cluster of Workstation （COW） wit...For data association in multisensor and multitarget tracking, a novel parallel algorithm is developed to improve the efficiency and real-time performance of FGAs-based algorithm. One Cluster of Workstation （COW） with Message Passing Interface （MPI） is built. The proposed Multi-Deme Parallel FGA （MDPFGA） is run on the platform. A serial of special MDPFGAs are used to determine the static and the dynamic solutions of generalized m-best S-D assignment problem respectively, as well as target states estimation in track management. Such an assignment-based parallel algorithm is demonstrated on simulated passive sensor track formation and maintenance problem. While illustrating the feasibility of the proposed algorithm in multisensor multitarget tracking, simulation results indicate that the MDPFGAs-based algorithm has greater efficiency and speed than the FGAs-based algorithm.展开更多
目的:探讨戴明环(plan、do、check and act,PDCA)护理模式在重症肺炎并发呼吸衰竭患者护理中的应用价值。方法:选取2019年1月—2021年2月南阳市第一人民医院收治的90例重症肺炎并发呼吸衰竭患者作为研究对象,将2019年1月—2020年1月收治...目的:探讨戴明环(plan、do、check and act,PDCA)护理模式在重症肺炎并发呼吸衰竭患者护理中的应用价值。方法:选取2019年1月—2021年2月南阳市第一人民医院收治的90例重症肺炎并发呼吸衰竭患者作为研究对象,将2019年1月—2020年1月收治的45例患者纳入参照组,予以常规护理;将2020年2月—2021年2月收治的45例患者纳入观察组,予以戴明环护理。对比两组患者情绪自评量表(Depression Anxiety Stress Scales,DASS-21)、急性生理与慢性健康量表(Acute Physiology And Chronic Health Evaluation,APACHE-II)评分;对比两组患者症状(发绀、气促、肺部啰音)消失时间与住院时间。结果:护理后,观察组的DASS-21、APACHE-II评分均低于参照组,差异有统计学意义(t=3.694、4.048,P<0.05)。观察组发绀消失、气促消失、肺部啰音消失时间及住院时间比参照组低,差异有统计学意义(t=2.897、3.216、3.180、2.068,P<0.05)。结论:戴明环护理模式能缓解重症肺炎并发呼吸衰竭患者的负性情绪,有利于改善患者的临床症状与疾病预后。展开更多
为解决指针式仪表示数读取中识别精度低和算法读取速度慢的问题,提出一种基于戴明回归和感兴趣区域(region of interest, ROI)细化的指针式仪表读数技术.给出了仪表示数读取的算法流程:首先选择ROI,采用基于颜色通道的剪影法和二值化形...为解决指针式仪表示数读取中识别精度低和算法读取速度慢的问题,提出一种基于戴明回归和感兴趣区域(region of interest, ROI)细化的指针式仪表读数技术.给出了仪表示数读取的算法流程:首先选择ROI,采用基于颜色通道的剪影法和二值化形态学操作进行图像预处理;接着运用图像帧差法消除指针的抖动;然后利用ROI细化算法对待识别仪表的指针进行细化;再使用戴明回归法拟合出仪表指针所在直线的方程和斜率;最后根据指针斜率利用角度法计算仪表的实时示数.通过3组试验,测试了该方法的可行性和防抖动能力,比较了戴明回归拟合直线与霍夫直线检测拟合直线的检测精度,还比较了ROI细化算法与全局细化算法的计算速度.结果表明该方法检测的平均误差比霍夫直线检测减小了37.85%,每张图像的平均计算时间比全局细化算法减少了192.717 s,同时具有防抖动能力.展开更多
In this paper,Changli station in Hebei Province was taken as an example,in which the minute data of geomagnetic Z component was used to analyze the spectral values of its main frequencies during normal time,geomagneti...In this paper,Changli station in Hebei Province was taken as an example,in which the minute data of geomagnetic Z component was used to analyze the spectral values of its main frequencies during normal time,geomagnetic storm time and low point displacement time interval respectively. After fitting of ten high spectral values to loga-rithmic functions,it is found that,by using same length of data,the spectral values at geomagnetic storm time in-crease apparently compared with those at normal time,especially at the high frequency segment. While low point displacement occurred,the spectral values at high frequency are approximate to those at normal time,but at period above 4 hours they are mostly lower than those at normal time. Comparison of accumulating of some FFT results at low point displacement and normal time shows that,spectral values at periods of 8.5 and 13.7 hours increase at low point displacement time relative to those at normal time. Compared with the images of Ne observed at DE-METER satellite,it is illustrated that the occurrence of geomagnetic low point displacement is well corresponding with the increase of Ne in ionosphere. Finally it was discussed about those spectral features and the occurrence mechanism of geomagnetic low point displacement.展开更多
基金Supported by National Defence Scientific Research Foundation
文摘For data association in multisensor and multitarget tracking, a novel parallel algorithm is developed to improve the efficiency and real-time performance of FGAs-based algorithm. One Cluster of Workstation （COW） with Message Passing Interface （MPI） is built. The proposed Multi-Deme Parallel FGA （MDPFGA） is run on the platform. A serial of special MDPFGAs are used to determine the static and the dynamic solutions of generalized m-best S-D assignment problem respectively, as well as target states estimation in track management. Such an assignment-based parallel algorithm is demonstrated on simulated passive sensor track formation and maintenance problem. While illustrating the feasibility of the proposed algorithm in multisensor multitarget tracking, simulation results indicate that the MDPFGAs-based algorithm has greater efficiency and speed than the FGAs-based algorithm.
文摘目的:探讨戴明环(plan、do、check and act,PDCA)护理模式在重症肺炎并发呼吸衰竭患者护理中的应用价值。方法:选取2019年1月—2021年2月南阳市第一人民医院收治的90例重症肺炎并发呼吸衰竭患者作为研究对象,将2019年1月—2020年1月收治的45例患者纳入参照组,予以常规护理;将2020年2月—2021年2月收治的45例患者纳入观察组,予以戴明环护理。对比两组患者情绪自评量表(Depression Anxiety Stress Scales,DASS-21)、急性生理与慢性健康量表(Acute Physiology And Chronic Health Evaluation,APACHE-II)评分;对比两组患者症状(发绀、气促、肺部啰音)消失时间与住院时间。结果:护理后,观察组的DASS-21、APACHE-II评分均低于参照组,差异有统计学意义(t=3.694、4.048,P<0.05)。观察组发绀消失、气促消失、肺部啰音消失时间及住院时间比参照组低,差异有统计学意义(t=2.897、3.216、3.180、2.068,P<0.05)。结论:戴明环护理模式能缓解重症肺炎并发呼吸衰竭患者的负性情绪,有利于改善患者的临床症状与疾病预后。
文摘为解决指针式仪表示数读取中识别精度低和算法读取速度慢的问题,提出一种基于戴明回归和感兴趣区域(region of interest, ROI)细化的指针式仪表读数技术.给出了仪表示数读取的算法流程:首先选择ROI,采用基于颜色通道的剪影法和二值化形态学操作进行图像预处理;接着运用图像帧差法消除指针的抖动;然后利用ROI细化算法对待识别仪表的指针进行细化;再使用戴明回归法拟合出仪表指针所在直线的方程和斜率;最后根据指针斜率利用角度法计算仪表的实时示数.通过3组试验,测试了该方法的可行性和防抖动能力,比较了戴明回归拟合直线与霍夫直线检测拟合直线的检测精度,还比较了ROI细化算法与全局细化算法的计算速度.结果表明该方法检测的平均误差比霍夫直线检测减小了37.85%,每张图像的平均计算时间比全局细化算法减少了192.717 s,同时具有防抖动能力.
基金National Science and Technology Program (2006BAC011302-04-02)Basic Research Project in Institute of Earthquake Science,China Earthquake Administration.
文摘In this paper,Changli station in Hebei Province was taken as an example,in which the minute data of geomagnetic Z component was used to analyze the spectral values of its main frequencies during normal time,geomagnetic storm time and low point displacement time interval respectively. After fitting of ten high spectral values to loga-rithmic functions,it is found that,by using same length of data,the spectral values at geomagnetic storm time in-crease apparently compared with those at normal time,especially at the high frequency segment. While low point displacement occurred,the spectral values at high frequency are approximate to those at normal time,but at period above 4 hours they are mostly lower than those at normal time. Comparison of accumulating of some FFT results at low point displacement and normal time shows that,spectral values at periods of 8.5 and 13.7 hours increase at low point displacement time relative to those at normal time. Compared with the images of Ne observed at DE-METER satellite,it is illustrated that the occurrence of geomagnetic low point displacement is well corresponding with the increase of Ne in ionosphere. Finally it was discussed about those spectral features and the occurrence mechanism of geomagnetic low point displacement.
